Re: Nonrandom scanned_pages distorts pg_class.reltuples set by VACUUM

On Wed, Feb 16, 2022 at 07:43:09PM -0800, Peter Geoghegan wrote:
> > I also have a hard time making heads or tails out of the commit message of
> > 44fa84881ff. It's quite long without being particularly descriptive. The
> > commit just changes a lot of things at once, making it hard to precisely
> > describe and very hard to review and understand.
>
> The commit message is high level. The important point is that we can
> more or less treat all scanned_pages the same, without generally
> caring about whether or not a cleanup lock could be acquired (since
> the exceptions where that isn't quite true are narrow and rare). That
> is the common theme, for everything.

As for myself, I particularly appreciated the clarity and detail of this commit
message. (I have looked at the associated change a bit, but not deeply).

Thanks,
--
Justin